Golfers can select the ball type they want to use before the game by going to their Golf Bag (Inventory) under the Balls tab.
Even if you've forgotten to select the ball beforehand, don't worry!
You can still Swap the golf ball you want to use before tee off.
Keep in mind that you're stuck with the ball you tee off with for the rest of the game unless you lose the ball by going out of bounds.
If you do lose the ball you can select a new ball.